Apple Xsan 1.4 - Manual (Page 64)

64 Chapter 2 Setting Up a Storage Area Network
4 Don’t adjust the block allocation size unless you have specific performance tuning
needs.
For more information, see “Choosing Block Allocation Size for a Volume” on page 98.
5 Choose an allocation strategy. This determines the order in which data is written to the
storage pools that make up the volume. You can choose:
 Round Robin: New data is written to the next available storage pool in the volume.
 Fill: Data is stored on the first storage pool until it is full, and then on the next
storage pool.
 Balance: New data is written to the storage pool that has the most free space.
6 If you have Windows clients, choose an ID mapping method.
Note: To use ID mapping, Windows clients must be running StorNext 2.7. Xsan
controllers and clients must be running Xsan 1.3 or later.
 Generate IDs from GUID: Windows clients dynamically generate UIDs and GIDs
based on GUID information in an Active Directory domain.
 Use IDs from LDAP (RFC 2307): Windows clients get UID and GID values from the
uidNumber and gidNumber attributes in Active Directory records.
For more information, see “Mapping Windows User and Group IDs” on page 112.
7 Click OK.
Repeat these steps if you want to create additional volumes.
Now you’re ready to add storage pools to each volume.